Evidence map›Paper›PMID 22427623›Full record

ArticleJournal of bacteriology2012

Efficient decoding of the UAG triplet as a full-fledged sense codon enhances the growth of a prfA-deficient strain of Escherichia coli.

Kazumasa Ohtake, Aya Sato, Takahito Mukai, Nobumasa Hino, Shigeyuki Yokoyama, Kensaku Sakamoto

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In one paragraph

Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.0field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Review
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  6. Translational Control using an Expanded Genetic Code.International journal of molecular sciences · 2019
    Review
  7. Article
  8. Article
  9. Review
  10. Rewriting the Genetic Code.Annual review of microbiology · 2017
    Review
  11. Article
  12. Cell-Free Synthetic Biology: Engineering Beyond the Cell.Cold Spring Harbor perspectives in biology · 2016
    Review
  13. Emergent rules for codon choice elucidated by editing rare arginine codons in Escherichia coli.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  14. Article
  15. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Kazumasa OhtakeRIKEN Systems and Structural Biology Center, Tsurumi, Yokohama, Japan.
Aya Sato
Takahito Mukai
Nobumasa Hino
Shigeyuki Yokoyama
Kensaku Sakamoto
Systems Biology Institute · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We previously reassigned the amber UAG stop triplet as a sense codon in Escherichia coli by expressing a UAG-decoding tRNA and knocking out the prfA gene, encoding release factor 1. UAG triplets were left at the ends of about 300 genes in the genome. In the present study, we showed that the detrimental effect of UAG reassignment could be alleviated by increasing the efficiency of UAG translation instead of reducing the number of UAGs in the genome. We isolated an amber suppressor tRNA(Gln) variant displaying enhanced suppression activity, and we introduced it into the prfA knockout strain, RFzero-q, in place of the original suppressor tRNA(Gln). The resulting strain, RFzero-q3, translated UAG to glutamine almost as efficiently as the glutamine codons, and it proliferated faster than the parent RFzero-q strain. We identified two major factors in this growth enhancement. First, the sucB gene, which is involved in energy regeneration and has two successive UAG triplets at the end, was expressed at a higher level in RFzero-q3 than RFzero-q. Second, the ribosome stalling that occurred at UAG in RFzero-q was resolved in RFzero-q3. The results revealed the importance of "backup" stop triplets, UAA or UGA downstream of UAG, to avoid the deleterious impact of UAG reassignment on the proteome.

Indexed as

Cell ProliferationChromosomes, BacterialEscherichia coliEscherichia coli ProteinsGene Expression Regulation, BacterialGenetic EngineeringGenome, BacterialMutationPeptide Termination FactorsRNA, BacterialRNA, TransferEscherichia coli ProteinsPeptide Termination FactorsprfA protein, E coliRNA, BacterialRNA, Transfer

Identifiers

PMID22427623
PMCPMC3347192
OpenAlexW2147603318

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.